Final answer:
The statement by the patient that reflects the need for additional education about the calcium channel blocker diltiazem (Cardizem) is option c.
Step-by-step explanation:
The statement by the patient that reflects the need for additional education about the calcium channel blocker diltiazem (Cardizem) is option c. The patient states that when the long-acting forms of the drug are taken, it cannot be crushed. This reflects the need for education because crushing the drug can alter its pharmacokinetics and therapeutic effects.